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Vishay General Semiconductor - Diodes Division 1.5KE120CHE3/54
- Part No.:
- 1.5KE120CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120CHE3/54.pdf
- Description:
- TVS DIODE 97.2VWM 173VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,096
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Product details
Overview
1.5KE120CHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 120 V breakdown voltage (VBR = 114–126 V at 1 mA), 102 V maximum working voltage (VWM), 165 V clamping voltage (VC) at 9.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in industrial motor drives.
For engineers reviewing the 1.5KE120CHE3/54 datasheet, 1.5KE120CHE3/54 pinout, 1.5KE120CHE3/54 application, or 1.5KE120CHE3/54 equivalent, this device delivers verified transient suppression performance for 24–48 V DC systems requiring AEC-Q101-qualified surge robustness, low clamping ratio (VC/VWM ≈ 1.62), and RoHS-compliant matte tin-plated leads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction, diverting surge current away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and fast response (<1 ns), while the molded epoxy case meets UL 94 V-0 flammability rating.
Thermal design relies on its 15.4 °C/W junction-to-lead thermal resistance and 75 °C/W junction-to-ambient rating; derating begins above 25 °C ambient per Fig. 2, supporting reliable operation up to TJ = 175 °C. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1 mA - defines precise avalanche initiation threshold for repeatable clamping onset |
| VWM | 102 V - maximum continuous DC or RMS operating voltage before leakage rises significantly |
| VC @ IPPM | 165 V at 9.1 A - clamping voltage during 10/1000 µs surge; limits stress on protected ICs to safe levels |
| PPPM | 1500 W - peak transient power handling capability under standard 10/1000 µs waveform |
| IPPM | 9.1 A - maximum non-repetitive surge current the device safely clamps without degradation |
| TJ max. | 175 °C - maximum junction temperature enabling use in high-ambient industrial environments |
| Package | DO-201AD (Case Style 1.5KE) - axial-leaded through-hole package with 0.375" lead length for mechanical robustness and thermal relief |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with cathode band marking. Leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102, rated for 275 °C dip soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or low-voltage rail; forms shunt path during overvoltage events |
| Cathode | High-side surge input terminal | Marked with color band; connects to protected line (e.g., +24 V rail); conducts avalanche current to anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 µA at VWM), and long-term reliability under thermal cycling |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance per AEC standard |
| 1500 W peak pulse power | Supports robust protection against IEC 61000-4-5 Level 4 (4 kV) surges in industrial power supplies and motor controllers |
| Clamping ratio VC/VWM = 1.62 | Minimizes overvoltage overshoot during transients - critical for protecting 100 V-rated MOSFETs and gate drivers |
| UL 94 V-0 compliant molding | Provides flame-retardant housing essential for safety-critical equipment in industrial and transportation applications |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate driver ICs and bootstrap FETs against inductive kickback from 48 V BLDC motor windings. IC Role / Device Role / Timing Role: Shunt TVS placed across high-side gate resistor to clamp voltage spikes within 1 ns, preventing gate oxide rupture. Use Value: Enables use of cost-effective 100 V MOSFETs by limiting transient stress to ≤165 V, extending system lifetime in harsh EMI environments. |
Use Scenario: Surge protection on LIN bus power rail (VBAT) in door module ECUs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply input, triggered before internal LDOs or CAN transceivers reach failure thresholds. Use Value: Meets ISO 7637-2 Pulse 5a requirements with no additional series impedance, reducing BOM count and PCB area. |
| Telecom Power Feeds | Industrial PLC Analog Inputs |
Use Scenario: DC power feed protection in remote radio units powered via 48 V PoE-like infrastructure with lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense on input stage, clamping induced transients before they reach DC/DC converters and PMICs. Use Value: Withstands 1500 W surges without degradation, eliminating need for multi-stage protection and simplifying compliance testing. |
Use Scenario: Overvoltage safeguard for 4–20 mA current loop inputs in programmable logic controllers subjected to field wiring faults. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to analog ground, absorbing accidental 24 V reverse polarity or 100 V transients. Use Value: Maintains <1 µA leakage at 24 V, preserving measurement accuracy while surviving repeated 1 kV/1.2 × 50 µs surges per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A-E3/52 | Lower PPPM (600 W), smaller SMB package (surface-mount), VC = 193 V @ 3.1 A | Better suited for space-constrained PCBs but requires derating for >1 kV surges; not AEC-Q101 qualified | Select when board area is limited and surge energy is ≤600 W; verify thermal relief for sustained pulses. |
| 1.5KE120A-E3/54 | Same VBR/VWM/VC specs, identical DO-201AD package, but commercial-grade (non-AEC-Q101) | Lacks automotive qualification and JESD 201 Class 2 whisker resistance; suitable for industrial-only deployments | Choose for cost-sensitive non-automotive applications where AEC-Q101 is not mandated and full 1500 W rating is required. |
Compared with 1.5KE120CHE3/54, SMBJ120A-E3/52 trades surge capacity and qualification for compactness, while 1.5KE120A-E3/54 retains full power rating but omits automotive reliability validation - making the HE3 variant the only choice for production automotive modules requiring both 1500 W clamping and AEC-Q101 compliance.
Availability
1.5KE120CHE3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and PLC analog inputs requiring stable component supply, long-lifecycle support, and traceable AEC-Q101-qualified parts.
Supply support for 1.5KE120CHE3/54 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KE family was engineered for high-energy transient suppression in demanding DC power and signal line applications, emphasizing rugged packaging, tight VBR tolerance, and AEC-Q101 qualification for mission-critical systems.
FAQ
What is the breakdown voltage tolerance for 1.5KE120CHE3/54?
The 1.5KE120CHE3/54 has a specified breakdown voltage range of 114 V to 126 V at 1 mA test current, representing a ±5 % tolerance around the nominal 120 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports predictable system-level surge margin calculations in designs using this device.
Is 1.5KE120CHE3/54 suitable for bidirectional transient protection?
No, 1.5KE120CHE3/54 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the 1.5KE120CA variant. Using 1.5KE120CHE3/54 on AC or floating lines would result in forward conduction during negative half-cycles, potentially damaging the device or circuit.
What does the "HE3" suffix signify in 1.5KE120CHE3/54?
The "HE3" suffix in 1.5KE120CHE3/54 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this automotive-grade version from commercial "E3" variants and confirms compliance with stress tests including temperature cycling, humidity bias, and surge endurance per AEC standard.
Can 1.5KE120CHE3/54 be used in parallel to increase surge current handling?
Yes, 1.5KE120CHE3/54 may be paralleled to increase total IPPM, but only with careful layout: matched trace lengths, symmetric thermal paths, and individual current-limiting resistors are required to ensure balanced sharing. Without such measures, mismatched VBR tolerances can cause one device to dominate conduction and fail prematurely.
What is the maximum allowable lead temperature during soldering for 1.5KE120CHE3/54?
The maximum allowable solder dip temperature for 1.5KE120CHE3/54 is 275 °C for up to 10 seconds, per JESD 22-B106. Exceeding this limit risks delamination of the epoxy mold compound or degradation of the glass-passivated junction, compromising long-term reliability and clamping consistency.
1.5KE120CHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 97.2V
- Voltage - Breakdown (Min):
- 108V
- Voltage - Clamping (Max) @ Ipp:
- 173V
- Current - Peak Pulse (10/1000µs):
- 8.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE120CHE3/54 FAQ
1.How can I place an order for 1.5KE120CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120CHE3/54 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1.5KE120CHE3/54 reliable?
The price and inventory of 1.5KE120CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE120CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE120CHE3/54?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE120CHE3/54?
1.5KE120CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE120CHE3/54 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1.5KE120CHE3/54?
For technical support, including 1.5KE120CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE120CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE120CHE3/54 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1.5KE120CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE120CHE3/54?
All 1.5KE120CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120CHE3/54, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1.5KE120CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE120CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120CHE3/54 Tags
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